The Mercedes-Benz GLC 220d 4MATIC, introduced in June 2022 as part of the X254 generation, represents a key offering in the premium compact SUV segment. This variant combines a 2.0-liter turbocharged diesel engine with a 48-volt mild hybrid system and a nine-speed automatic transmission, delivering a balance of performance, efficiency, and luxury. Positioned as a mid-range option within the GLC lineup, the 220d caters to buyers seeking a refined driving experience with reduced emissions compared to higher-powered gasoline alternatives. It serves as a popular choice in European and global markets where diesel engines remain prevalent.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | GLC |
| Generation | GLC SUV (X254) |
| Type (Engine) | GLC 220d (197 Hp) Mild Hybrid 4MATIC 9G-TRONIC |
| Start of production | June, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 5.2-5.9 l/100 km (45.2 – 39.9 US mpg, 54.3 – 47.9 UK mpg, 19.2 – 16.9 km/l) |
| CO2 emissions (WLTP) | 136-155 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8 sec |
| Acceleration 0 – 62 mph | 8 sec |
| Acceleration 0 – 60 mph | 7.6 sec |
| Maximum speed | 219 km/h (136.08 mph) |
| Weight-to-power ratio | 9.8 kg/Hp, 102.3 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 228.6 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 23 Hp |
| Electric motor Torque | 200 Nm (147.51 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Power | 197 Hp @ 3600 rpm |
| Torque | 440 Nm @ 1800-2800 rpm (324.53 lb.-ft. @ 1800-2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | OM 654 M |
| Engine displacement | 1993 cm3 (121.62 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.3 mm (3.71 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Twin-Turbo, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 1925 kg (4243.9 lbs.) |
| Max. weight | 2550 kg (5621.79 lbs.) |
| Max load | 625 kg (1377.89 lbs.) |
| Trunk (boot) space – minimum | 620 l (21.9 cu. ft.) |
| Trunk (boot) space – maximum | 1640 l (57.92 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Permitted trailer load with brakes (12%) | 2500 kg (5511.56 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4716 mm (185.67 in.) |
| Width | 1890 mm (74.41 in.) |
| Width including mirrors | 2075 mm (81.69 in.) |
| Height | 1640 mm (64.57 in.) |
| Wheelbase | 2888 mm (113.7 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1640 mm (64.57 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels, operating in mixed mode. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS, 4-wheel steering |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | Front: 235/55 R19, Rear: 255/50 R19 |
| Wheel rims size | Front: 8J x 19, Rear: 9J x 19 |
Powertrain & Engine Architecture
The GLC 220d is powered by the OM 654 M, a 2.0-liter inline-four cylinder diesel engine. This engine is a cornerstone of Mercedes-Benz’s modern diesel offerings, known for its efficiency and refinement. It utilizes a twin-turbocharger setup with variable geometry turbines (VGT) to deliver strong torque across a broad rev range. The engine employs a common-rail direct fuel injection system operating at extremely high pressures (2700 bar) for optimized combustion. The 48-volt mild hybrid system integrates a belt-driven starter-generator (BSG) that provides a power boost during acceleration and enables features like extended coasting and smoother start/stop operation. The 9G-TRONIC nine-speed automatic transmission is standard, offering quick and seamless gear changes. This transmission is designed for efficiency and comfort, with closely spaced gear ratios to keep the engine in its optimal power band.
Driving Characteristics
The GLC 220d 4MATIC delivers a composed and comfortable driving experience. While not as overtly sporty as some of its gasoline-powered siblings, the 440 Nm (324.53 lb-ft) of torque provides ample pulling power for everyday driving and highway overtaking. The mild hybrid system contributes to a responsive feel, particularly during initial acceleration. The 9G-TRONIC transmission is well-tuned, providing smooth shifts and contributing to relaxed cruising. Compared to the more powerful GLC 300, the 220d prioritizes fuel economy and refinement over outright performance. The all-wheel-drive system provides excellent traction in various weather conditions, enhancing stability and confidence. The gear ratios are optimized for fuel efficiency, meaning the engine doesn’t rev as high as in sportier trims.
Equipment & Trim Levels
The GLC 220d typically comes well-equipped as standard. Common features include Mercedes-Benz User Experience (MBUX) infotainment system with a touchscreen display, Apple CarPlay and Android Auto integration, a panoramic sunroof, leather upholstery, heated front seats, and a suite of advanced driver-assistance systems (ADAS) such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras include premium sound systems, augmented reality navigation, head-up display, and various interior trim upgrades. Trim levels often build upon the standard equipment, offering more luxurious materials and additional features.
Chassis & Braking
The X254 GLC features a sophisticated chassis design with independent multi-link suspension at both the front and rear axles. This setup provides a comfortable ride quality while maintaining good handling characteristics. The 220d variant typically utilizes ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability program (ESP) and anti-lock braking system (ABS) are standard, enhancing safety and control. The suspension is tuned to balance comfort and handling, offering a stable and predictable driving experience.
Market Reception & Comparison
The GLC 220d has been well-received in markets where diesel engines are popular, praised for its fuel efficiency, refined driving experience, and comfortable interior. Critics have noted its strong torque delivery and smooth transmission. Compared to the GLC 300, the 220d offers better fuel economy but less outright performance. Against competitors like the BMW X3 20d and Audi Q5 2.0 TDI, the GLC 220d holds its own in terms of refinement, technology, and overall driving experience. The mild hybrid system provides a slight advantage in fuel efficiency compared to non-hybrid diesel rivals.
Legacy
The OM 654 engine family, including the version used in the GLC 220d, has proven to be a reliable and durable powertrain. While long-term reliability data is still emerging for the X254 generation, the engine’s robust design and advanced technology suggest it will offer years of dependable service. On the used car market, the GLC 220d is expected to hold its value well due to its fuel efficiency, practicality, and the Mercedes-Benz brand reputation. The integration of the 48-volt mild hybrid system represents a step towards electrification, positioning the GLC 220d as a transitional model in Mercedes-Benz’s journey towards a fully electric future.
